nixos/mealie: init module

Signed-off-by: Litchi Pi <litchi.pi@proton.me>

nixos/modules/module-list.nix

@@ -1320,6 +1320,7 @@
   ./services/web-apps/mastodon.nix
   ./services/web-apps/matomo.nix
   ./services/web-apps/mattermost.nix
+  ./services/web-apps/mealie.nix
   ./services/web-apps/mediawiki.nix
   ./services/web-apps/meme-bingo-web.nix
   ./services/web-apps/microbin.nix

nixos/modules/services/web-apps/mealie.nix

@@ -0,0 +1,79 @@
+{ config, lib, pkgs, ...}:
+let
+  cfg = config.services.mealie;
+  pkg = cfg.package;
+in
+{
+  options.services.mealie = {
+    enable = lib.mkEnableOption "Mealie, a recipe manager and meal planner";
+
+    package = lib.mkPackageOption pkgs "mealie" { };
+
+    listenAddress = lib.mkOption {
+      type = lib.types.str;
+      default = "0.0.0.0";
+      description = "Address on which the service should listen.";
+    };
+
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 9000;
+      description = "Port on which to serve the Mealie service.";
+    };
+
+    settings = lib.mkOption {
+      type = with lib.types; attrsOf anything;
+      default = {};
+      description = lib.mdDoc ''
+        Configuration of the Mealie service.
+
+        See [the mealie documentation](https://nightly.mealie.io/documentation/getting-started/installation/backend-config/) for available options and default values.
+
+        In addition to the official documentation, you can set {env}`MEALIE_LOG_FILE`.
+      '';
+      example = {
+        ALLOW_SIGNUP = "false";
+      };
+    };
+
+    credentialsFile = lib.mkOption {
+      type = with lib.types; nullOr path;
+      default = null;
+      example = "/run/secrets/mealie-credentials.env";
+      description = ''
+        File containing credentials used in mealie such as {env}`POSTGRES_PASSWORD`
+        or sensitive LDAP options.
+
+        Expects the format of an `EnvironmentFile=`, as described by {manpage}`systemd.exec(5)`.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.services.mealie = {
+      description = "Mealie, a self hosted recipe manager and meal planner";
+
+      after = [ "network-online.target" ];
+      wants = [ "network-online.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      environment = {
+        PRODUCTION = "true";
+        ALEMBIC_CONFIG_FILE="${pkg}/config/alembic.ini";
+        API_PORT = toString cfg.port;
+        DATA_DIR = "/var/lib/mealie";
+        CRF_MODEL_PATH = "/var/lib/mealie/model.crfmodel";
+      } // (builtins.mapAttrs (_: val: toString val) cfg.settings);
+
+      serviceConfig = {
+        DynamicUser = true;
+        User = "mealie";
+        ExecStartPre = "${pkg}/libexec/init_db";
+        ExecStart = "${lib.getExe pkg} -b ${cfg.listenAddress}:${builtins.toString cfg.port}";
+        EnvironmentFile = lib.mkIf (cfg.credentialsFile != null) cfg.credentialsFile;
+        StateDirectory = "mealie";
+        StandardOutput="journal";
+      };
+    };
+  };
+}